Case Studies

Case study poster describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer home in the cold climate that used R-22 ICF walls, R-63 unvented vaulted attic insulation, and triple-pane windows to achieve a HERS score of -11 with PV and 26 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom spec home in the cold climate that used a high efficiency 98 AFUE gas furnace, 5-stage 19 SEER heat pump, LED lighting, ENERGY STAR appliances, smart thermostats and lighting, and automated window blinds...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable home in the cold climate that used above-grade walls filled with 5.5 inches of open-cell spray foam and sheathed with an R-6.5 insulated coated OSB sheathing, providing a continuous air barrier and...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production homes in the mixed-humid climate that used an energy recovery ventilator tied to the home's high efficiency central heat pump with a MERV 13 filter to achieve a HERS score of 9 with PV and 46 without...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the mixed-humid climate that achieved a HERS score of 50 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning production home in the mixed-humid climate that used ENERGY STAR labeled appliances, WaterSense labeled fixtures, and 100% LED lighting to achieve a HERS score of 50 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer home in the cold climate that used triple-pane windows, a hydronic radiant floor heating system, an electric vehicle charging station, and 7.3kW of rooftop-mounted solar panels to achieve a HERS...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer homes in the marine climate that achieved a HERS score of -19 with PV and 33 without PV.

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning custom for buyer home in the marine climate that used a large south-facing roof which holds over 80 solar panels and large, south-facing windows and concrete floors, which provide passive solar heating to...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning attached housing home in the cold climate that used high insulation levels in the attic, walls, and under the slab, with ENERGY STAR appliances, and solar PV panels to achieve a HERS score of 29 with PV and 50...

Case study describing a DOE Zero Energy Ready Home 2020 Housing Innovation Award winning affordable multifamily home in the mixed-humid climate that used water-saving plumbing fixtures and irrigation and efficient hot water distribution by means of a heat pump water heater and PEX piping to achieve...

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing in the marine climate that achieved a HERS score of 0 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the marine climate that achieved a HERS score of -41 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS score of 34 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the mixed-dry climate that achieved a HERS score of 15 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the cold climate that achieved a HERS score of 43 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing in the marine climate that achieved a HERS score of 41 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the hot-humid climate that achieved a HERS score of -21 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the marine climate that achieved a HERS score of -2 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS score of -25 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the cold climate that achieved a HERS score of 44 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing in the cold climate that achieved a HERS score of 45 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable home in the hot-humid climate that achieved a HERS score of 45 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable housing in the cold climate that achieved a HERS score of 31 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-humid climate that achieved a HERS score of 1 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-humid climate that achieved a HERS score of 51 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable home in the marine climate that achieved a HERS score of 0 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-dry climate that achieved a HERS score of 34 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the marine climate that achieved a HERS score of -13 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the cold climate that achieved a HERS score of 34 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the cold climate that achieved a HERS score of 51 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing project in the coldclimate that achieved a HERS score of -2 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the mixed-humid climate that achieved a HERS score of 55 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the mixed-humid climate that achieved a HERS score of 24 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached housing project in the marine climate that achieved a HERS score of -20 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the marine climate that achieved a HERS score of -22 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the cold climate that achieved a HERS score of 5 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS score of 32 with PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable home in the cold climate that achieved a HERS score of 33 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the cold climate that achieved a HERS score of -16 with PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the hot-humid climate that achieved a HERS -21 with PV or HERS 50 without PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-humid climate that achieved a HERS 51 without PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the mixed-dry climate that achieved a HERS 34 with PV or HERS 45 without PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom spec home in the marine climate that achieved a HERS -13 with PV or HERS 47 without PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning attached home in the cold climate that achieved a HERS -2 with PV or HERS 40 without PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning custom for buyer home in the marine climate that achieved a HERS -22 with PV or HERS 35 without PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning production home in the cold climate that achieved a HERS 5 with PV or HERS 39 without PV.

Case study describing a DOE Zero Energy Ready Home 2021 Housing Innovation Award winning affordable home in the mixed-humid climate that achieved a HERS 33 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom spec home in the mixed-dry climate that used 2x6 16-in. o.c. walls, R-25 spray foam attic insulation, and 3.45 kW of solar panels to achieve a HERS score of 30 with PV and 45 without PV.

Case study poster describing a DOE Zero Energy Ready Home 2022 Housing Innovation Award winning custom spec home in the cold climate that used R-22 ICF walls, an ICF insulated basement, and an R-50 cellulose attic insulation to achieve a HERS score of 49 without PV.